The 2-8-0 Consolidation Type Steam Locomotive

The first 2-8-0 is said to have appeared on the Pennsylvania Railroad around the end of the Civil War. However, the original designs were not very successful as they were mounted with a rigid front truck assembly instead of one that could freely move to more easily negotiate curves.

The first Consolidation purchased from a manufacturer was built by the Baldwin Locomotive Works and delivered to the Lehigh Valley Railroad in 1866. While sales for the Consolidation Type were initially slow after design flaws (like the rigid front truck) were worked out the 2-8-0 sold quite well (beginning in the 1870s), so well in fact that when production for the model finally ended, over 33,000 had been built!

The 2-8-0 design was a significant technological leap from the American, 4-4-0 wheel arrangement. The Consolidation, with its two extra driving axles and front pilot truck could not only pull trains that were twice as heavy but also run at speeds fast enough to be used in any type of passenger service. For instances, railroads such as the Baltimore & Ohio, Pennsylvania, and others, which operated in mountainous territory found that the Consolidation Type performed exemplary over stiff grades.

The leading steam locomotive design of the day that the Consolidation Type would replace, the American Type, can be given overwhelming credit, more than any other steam locomotive design before or since its development, for helping the United States flourish beginning in the latter half of the 19th century. After their debut and minor refinements the 4-4-0 wheel arrangement quickly proved its superior ability over all other types of its day and by the 1870s well over three-quarters of all steam locomotives operating in the country at that time were American Types! While the railroads themselves built our great nation into what it has become today, their initial workhorse in achieving that task was the 4-4-0 wheel arrangement.

Not only did the new American Type offer much better horsepower, tractive effort, and reliability it also signaled the way steam locomotives were to forever be built in the future with the boiler mounted horizontally (instead of vertically) and a smoke stack situated at a ninety-degree angle to the boiler at the front of the locomotive to expel the smoke and cinders. The 4-4-0 design also featured greater protection for train crews with an entirely enclosed cab (save for to the rear) on the back of the boiler.

In the subsequent years the American Type was improved upon and featured better traction, power, and an overall larger design (such as an increase in its boiler size). The 4-4-0 design proved to be just what the railroads needed during the latter half of the 19th century in their quest to build west and move larger and heavier trains. While Americans quickly lost their luster during the final decade of the 1800s as more powerful locomotives took their place such as Ten-Wheelers (of the 4-6-0 wheel arrangement) and Consolidations (of the 2-8-0 wheel arrangement) they had done their duty in pioneering steam locomotive design and development (some 4-4-0s remained in service into the 1940s, over 100 years after the design was initially conceived!).

Today, several Consolidations have been preserved across the country including a number of which are still in operation, such as Western Maryland Scenic Railroad’s #734.

For more information on the Consolidation Type steam locomotive consider one (or both) of the books below. Guide to North American Steam Locomotives by author George Drury includes nearly 500 pages of information on virtually all of the steam locomotive wheel arrangements and designs (including streamlined steamers) ever developed. The book is a great resource on steam locomotives and a fine reference tool; you should find it very useful.

Also, consider the book American Steam Locomotives from author Brian Solomon. While this publication does not include quite as much technical data as Guide to North American Steam Locomotives it is still a very good resource with lots of information and best of all, is loaded with photographs!